feh: update from 2.8 to 2.9.3
gdbm: update from 1.10 to 1.11
geoip: update from 1.4.6 to 1.6.0
eukleides: build with texinfo 4.x; version 5 doesn't succeed
all-packages.nix: remove redundant texinfo5 overrides

Texinfo 5.x is the default version now.